Answer:
Care giving tools like medical devices or any medical supplies which aid the effectiveness of care for the patient will help the quality of work of care giving. ... All of the care giving tool should also be efficient and effective
Discribe what it means to veiw something from frame ro reference. Give an example to illustrate your explanation.
Hi There!!
In physics, the concept of a frame of reference is used to specify the perspective from which an object or event is observed.
1). A frame of reference is where the measurements or observations will be made. Because of this, observing an event may be different when changing from one frame of reference to another, because the measurements will be different.
2). Defining frames of reference is necessary because the movement is relative, it may be that from our perspective or from a frame of reference on earth we are at rest, but seen from a frame of reference in space, we are in motion due that the earth is always moving.
3). Another example of frames of reference is a moving plane. Seen from the ground an object in the plane moves at the speed at which the plane travels, but if the frame of reference is fixed on the plane, the object is at rest.
Hope This Helps!!
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The captain of a small plane starts his journey by proceeding east. The speed of the plane with respect to still air is 180 km/h. A sudden north wind starts to blow at a constant speed of 63.0 km/h. What is the speed of the plane relative to the ground if no action is taken by the pilot? km/h 10. b) As seen by people on the ground, what is the angle made between the direction of motion of the plane with repect to the east?
The speed of the plane relative to the ground, without any action taken by the pilot, is approximately 191.2 km/h. As seen by people on the ground, the angle made between the direction of motion of the plane with respect to the east is approximately 18.9 degrees.
To determine the speed of the plane relative to the ground, we can use vector addition. The speed of the plane with respect to still air is given as 180 km/h, and the north wind blows at a constant speed of 63.0 km/h.
1. Speed of the plane relative to the ground:
To find the speed of the plane relative to the ground, we need to calculate the resultant vector of the plane's velocity and the wind's velocity. This can be done using the Pythagorean theorem:
Resultant speed = sqrt((180 km/h)² + (63.0 km/h)²)
= sqrt(32,400 km²/h² + 3,969 km²/h²)
= sqrt(36,369 km²/h²)
≈ 190.78 km/h
Therefore, the speed of the plane relative to the ground, without any action taken by the pilot, is approximately 190.78 km/h.
2. Angle made with respect to the east:
To find the angle made between the direction of motion of the plane with respect to the east, we can use trigonometry. The angle can be calculated as the inverse tangent of the wind's velocity (north) divided by the plane's velocity (east):
Angle = arctan((63.0 km/h) / (180 km/h))
≈ arctan(0.35)
≈ 18.9 degrees
Therefore, as seen by people on the ground, the angle made between the direction of motion of the plane with respect to the east is approximately 18.9 degrees.
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how long ago (in seconds) was that galaxy right next door to our own galaxy if it has always been receding at its present rate? since the universe began when all galaxies were very close together, this number is a rough estimate for the age of the universe.
According to the Statement it always was receding at its current rate, that galaxy was just next to our own galaxy, moving at 8000 km/s.
Which galaxy contains Earth?Astronomy The Universe The Nebula Galaxy. Did you know that, in conjunction to our light, the Sun, the Milky Way Cluster, a large expanse of space, includes millions and billions of other stars? Its Milky Way is distinguished by a phenomenal number of stars, infinitesimal particles, and gas.
Briefing :Since V = H x d, the velocity of a galaxy at a distance of 400 x 10⁶ light-years = 8000 km/s
For H = 20 km/s per million light-years. The time required to travel
4 x 10⁸ light - years at 8000 km/s is given by :
T = (4x10⁸ light - years ) (9.46 x 10¹² km /light-year) ÷ 8 x 10³
= 4.7 x 10¹⁷ = 15 billion year
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Complete question : Consider a galaxy at a distance of 400 million light-years receding from us at a velocity, v. If the Hubble constant is 20 km/s per million light-years, what is its velocity? How long ago was that galaxy right next door to our own Galaxy if it has always been receding at its present rate?
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 73.5-kg water-skier has an initial speed of 5.2 m/s. Later, the speed increases to 12.2 m/s. Determine the work done by the net external force acting on the skier.
ANSWER FOR BRAINLIEST IF ANSWER IS GOOD
Ignore my comment, that information is unnecessary.
Assuming no friction between the skis and the water, the total work performed on the skier is due only to the pulling force (T, for tension). By Newton's second law, the net force exerted on the skier is
∑ F = T = ma
where m = 73.5 kg is the mass of the skier, and a is their acceleration.
Under constant acceleration, the skier is pulled a distance x such that
(12.2 m/s)² - (5.2 m/s)² = 2ax
and solving for x gives
x = (60.9 m²/s²) / a
Then the total work performed on the skier is
W = Tx
W = ma • (60.9 m²/s²) / a
W = (73.5 kg) (60.9 m²/s²)
W ≈ 4480 J
A sports car moving at constant velocity travels 120m in 5.0s. If it then brakes and comes to a stop in 4.0s,what is the magnitude of it's acceleration?
✔ First calculating the speed :
V = d(in m)/t(in s)
V = 120/5 V = 24 m/s✔ You now know the average car's speed, is time it takes to stop it completely, so you can calculate its acceleration :
a = V/t
a = -24/4 a = 6 m/s² The car has an acceleration of 6 m/s².can yall answer this? (for class) whats the diffrentce between drug addict and acoholic?
Answer:none
Explanation:
To calculate the heat needed to warm a pot of water, what do you need to
know?
A. The mass and the amount of work done
B. The mass and the latent heat of vaporization
C. The mass, temperature change, and specific heat capacity
D. The mass and the latent heat of fusion
Answer:
C
Explanation:
Answer:
C
Explanation:
what is the couple force
Explanation:
a couple is a system of forces with a resultant moment but no resultant force. A better term is force couple or pure moment. Its effect is to create rotation without translation, or more generally without any acceleration of the centre of mass.
When humans pollute lakes, rivers, and streams,
Answer:
when waterways are polluted it affects all forms of life in the area - including us
expression:
for example when Lakes streams and ponds are polluted it can kill or harsh fish and other Wildlife that lives there!
hope that helps !
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A spring scale is a device that uses a spring with a known spring constant to measure the weight of objects. You have a spring scale with a spring constant of 13 Nm. How much will the spring stretch when a 12-N weight is hung from one end?
Answer:
It would stretch about 6 inches, but it depends on the metal.
Explanation:
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What does a white dwarf become when cools and stops emitting light
When a white dwarf cools and stops emitting light, it undergoes a transformation known as a black dwarf.
A white dwarf is the remnant core of a low to medium-mass star that has exhausted its nuclear fuel. Initially, it is hot and radiates intense thermal energy, mainly in the form of visible light.
Over an extremely long timescale, on the order of trillions of years, a white dwarf gradually loses its heat and fades away. As it cools down, it transitions into a black dwarf, which is essentially a cold, dark stellar remnant. A black dwarf lacks the necessary energy to sustain any nuclear fusion or emit significant amounts of light.
However, it is important to note that the universe is currently not old enough for any white dwarf to have reached the black dwarf stage. The estimated age of the universe is around 13.8 billion years, while the process of a white dwarf cooling to become a black dwarf takes many orders of magnitude longer.
Therefore, at present, black dwarfs are purely theoretical objects, as none are expected to exist yet due to the vast timescales involved.
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Your intuition should by now indicate that the reverse process of the air that was originally confined to one side of a chamber and allowed to expand to fill the entire chamber is impossible. To prove it to be impossible, we can conduct a second law analysis to assess the entropy produced. If the value for the entropy produced is negative, then in fact it is proven to be impossible. Report the entropy produced in units of kJ/K and report your answer using 3 significant digits. Consider the following:
m = 2.1777kg
P1 = 250kPa
Vi = 1m ^3
T2 = T1 = 400K
P2 = 500kPa
V2 = 0.5m^3
The entropy produced in the system is -62.5 J/k.
Work done on the system
The work done on the system is calculated as follows;
W = ΔPV
W = (P₂ - P₁)(V₂ - V₁)
W = (500 kPa - 250 kPa)(0.5 - 1)
W = (250 kPa)(-0.5)
W = - 250 x 10³ x 0.5
W = -1.25 x 10⁵ J
The entropy of the system is calculated as follows;
\(\Delta S = \frac{\Delta H}{T} \\\\\Delta S = \frac{-1.25 \times 10^{5}}{400} \\\\\Delta \ S = -62.5 \ J/K\)
Thus, the entropy produced in the system is -62.5 J/k.
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what best describes an impulse acting on an object?
An impulse acting on an object can be defined as the product of force and the time interval during which the force is applied. The greater the force and the longer the time interval, the greater the change in momentum that will be produced.
An impulse acting on an object can be described as the product of force and the time interval during which the force is applied.
Impulse is defined as the force acting on an object multiplied by the time interval during which the force acts. Therefore, impulse can be represented as follows:
Impulse = F * t
Where F is the force and t is the time during which the force is applied.
When a force is applied to an object, it imparts a change in momentum to the object. The magnitude of the change in momentum is proportional to the force applied and the time interval during which the force is applied. When a force acts on an object for a longer duration of time, the change in momentum will be greater than when the same force is applied for a shorter duration of time
.In conclusion, an impulse acting on an object can be defined as the product of force and the time interval during which the force is applied. The greater the force and the longer the time interval, the greater the change in momentum that will be produced.
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A television has a mass of 19kg what is the weight of the television
Answer:
186 N
ExplanatioN
Weight is essentially just a measurement of the force of gravity, so you can use this equation.
F = mg
Force = Mass × Acceleration due to Gravity
F = 19kg × 9.8m/s^2. (Acceleration due to Gravity on Earth.)
F = 186.02N
A woman walked 115 m. As she did so, her speed increased from 4.20 m/s to 5.00 m/s. How long did it take her to walk this distance?
Answer:
25 seconds
Explanation:
Assuming the woman is accelerating at a constant rate of \(a \;\;m/s^2\) from the initial velocity, u=4.20 m/s, to the final velocity, v=5.00 m/s.
Let she takes t seconds to cover the distance, s=115 m.
As acceleration, \(a=\frac{v-u}{t}=\frac{5-4.2}{t}\)
\(\Rightarrow at=0.8\cdots(i)\)
Now, from the equation of motion
\(s=ut+\frac 12 at^2\)
\(\Rightarrow s=ut+\frac 12 at(t)\)
\(\Rightarrow 115=4.2t+\frac 12 \times 0.8 t\) [ from equation (i)]
\(\Rightarrow 115=(4.2+0.4)t\)
\(\Rightarrow t= 115/4.6 = 25\) seconds.
Hence, she takes 25 seconds to walk the distance.
A bullet travelling horizontally with speed of 30m/s strike a wooden plank normal it surface, passing through it with a speed of 10m/s. Find the time taken by the the bullet to pass through the wooden plank of 5cm thickness
The bullet takes 0.0025 seconds to pass through the wooden plank of 5 cm thickness when it is traveling horizontally with an initial speed of 30 m/s and a final speed of 10 m/s.
The time taken by the bullet to pass through the wooden plank can be determined using the equation of motion for constant acceleration.
Given:
Initial speed (u) = 30 m/s
Final speed (v) = 10 m/s
Distance (s) = 5 cm = 0.05 m
To find the time taken (t), we need to calculate the acceleration (a) first. We can use the equation:
v² = u² + 2as
Rearranging the equation, we have:
a = (v² - u²) / (2s)
Substituting the given values:
a = (10² - 30²) / (2 * 0.05)
Simplifying the expression:
a = (-800) / (0.1)
a = -8000 m/s²
The negative sign indicates that the acceleration is in the opposite direction of the initial velocity.
Next, we can use the equation of motion:
v = u + at
Substituting the values:
10 = 30 + (-8000) * t
Simplifying the equation:
-8000t = -20
Dividing by -8000:
t = 20 / 8000
t = 0.0025 s
Therefore, the time taken by the bullet to pass through the wooden plank of 5 cm thickness is 0.0025 seconds.
To find the time taken by the bullet to pass through the wooden plank, we need to calculate the acceleration first using the equation of motion.
By rearranging the equation and substituting the given values, we can find the acceleration.
Then, using the equation of motion again, we can solve for time.
The negative sign in the acceleration indicates that it is in the opposite direction of the initial velocity.
The resulting time is 0.0025 seconds.
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what is the physical significance of the nusselt number n u? how does the reynolds number affect it?
a. Nusselt number (Nu) represents the ratio of convective to conductive heat transfer, indicating the efficiency of convective heat transfer.
b. The Reynolds number (Re) influences the Nusselt number by determining the flow regime, with higher Reynolds numbers corresponding to higher Nusselt numbers and more efficient convective heat transfer.
a. The physical significance of the Nusselt number is that it provides information about the efficiency of convective heat transfer. A higher Nusselt number indicates that convective heat transfer is more dominant compared to conductive heat transfer. It is commonly used to analyze heat transfer in fluid flows, such as in pipes, channels, or heat exchangers.
b. The Reynolds number influences the Nusselt number because it affects the flow regime and flow behavior. In forced convection heat transfer, the Reynolds number determines whether the flow is laminar or turbulent. The transition from laminar to turbulent flow is characterized by a critical Reynolds number.
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the common 9 volt battery imparts how much energy to one coulomb of charge?
9 joules of energy in one coulomb of charge.
The energy of the battery means the amount of energy given by the battery.
The energy that a battery imparts to a charge can be calculated using the formula:
E = V * Q
where,
E is the energy in joules, '
V is the voltage in volts, and
Q is the charge in coulombs.
For a 9 volt battery, the energy imparted to one coulomb of charge can be calculated as:
E = 9 V * 1 C
E = 9 J/C
One joule per coulomb is equal to one volt.
Hence,
9 J/C = 9 V
9 volt battery, the energy imparted to one coulomb of charge is 9 V.
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If the Sun is located at one focus of Earth's elliptical orbit, what is at the other focus? a. Jupiterb. Earth c. nothing d. another planet e. the Moon
The other focus of the Sun will be Nothing, hence option C is the correct answer. See more explanation below.
The other focus of the SunThe other focus of Earth's elliptical orbit is empty space because an ellipse is defined as a set of points in a plane, such that the sum of the distances from any point on the curve to two fixed points (the foci) is a constant. Because the Sun is located at one of the foci, the other focus must be empty space.
The orbit of the Earth is also shaped like an ellipse, which is a closed curve that is widened and flattened in one direction. The point where the ellipse is most stretched out is its focus, and the point where it is most flattened is its other focus. One of the foci is where the Sun is, and the other is just empty space.
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If your car is going 19 m/s at the beginning of the block (250 meters long), and your acceleration is 3.9
m/s?, how fast are you going at the end of the block?
Answer:
48 m/s
Explanation:
Given:
Δx = 250 m
v₀ = 19 m/s
a = 3.9 m/s²
Find: v
v² = v₀² + 2aΔx
v² = (19 m/s)² + 2 (3.9 m/s²) (250 m)
v ≈ 48 m/s
difference between fundamental unit and derived unit
Answer:
Fundamental units are the units of the fundamental physical quantities in SI system. They are not formed from other units. There are a total of seven fundamental units such as meter, kilogram, ampere, and second. Derived units are those units that are used for derived quantities.
Hernando and his little brother Tom are playing together at the park. Hernando pushes Tom on a swing.
Which of the following would most likely decrease Tom’s acceleration on the swing?
A) decreasing the mass on the swing
B) increasing the mass on the swing
C) decreasing Hernando’s pushing force
D) increasing Hernando’s pushing force
{Khan Academy}
Option C) decreasing Hernando’s pushing force will most likely decrease Tom’s acceleration on the swing.
The definition of acceleration is a change in the rate of motion, speed, or motion. An instance of acceleration is increasing your using pace from forty-five to 55 to merge with site visitors.
Accelerations are vector portions. The orientation of an object's acceleration is given with the aid of the orientation of the net force acting on that item. Acceleration is a vector quantity this is defined as the rate at which an object modifications its speed. An item is accelerating if it's far converting its velocity.
Speed and acceleration are basic terms of motion. speed is the distance protected with the aid of an object in unit time, whilst acceleration is the charge of change of speed.
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Emma is conducting an investigation to compare several physical properties of samples of two different kinds of rocks. When she measured and compared the masses of the two rocks, she found that rock 1 had a greater mass than rock 2. Which of the following is the best prediction of how another property of the rocks will compare?
A. The density of rock 1 will be the same as the density of rock 2
B. The weight of rock will be the greater than the weight of rock 2
C. The volume of rock 1 will be less than the volume of rock 2
D. The state of matter of rock 1 will be different than that of rock 2
Answer:
B. The weight of rock 1 will be the greater than the weight of rock 2
Explanation:
We are told that the mass of rock 1 is greater than the mass of rock 2.
Now, weight is given by;
W = mg.
g is constant. Thus means that weight of rock 1 will be greater than weight of rock 2.
In operant conditioning, many complex behaviors are learned through shaping.
T or F
Elastic Collisions are defined as....
A collision in which the total kinetic energy of the colliding bodies or particles is the same after the collision as it was before (opposed to inelastic collision).
Answer:
An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision. Both momentum and kinetic energy are conserved quantities in elastic collisions.
Explanation:
Hope this helps! Just reword it if u can:)
A 40 N block is resting on a rough inclined plane. The static friction between the block and the plane is ____ N.
The static friction between the block and the plane is \(40(\mu_s) \ N\).
The given parameters:
Weight of the block, W = 40 NThe normal reaction on the rough surface due to weight of the block is calculated as follows;
\(F_n = 40 \ N\)
The static friction between the block and the plane is calculated as follows;
\(F_s = \mu_s F_n\)
where;
\(\mu_s\) is coefficient of static frictionThus, the static friction between the block and the plane is \(40(\mu_s) \ N\).
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If a resident accidentally causes a chunk of ice to fall from the roof, how fast would the ice be moving when it hits the ground? Neglect air resistance.
Answer:
v = √2gh
v = 7 m / s
Explanation:
For this exercise we can use the law of conservation of energy
starting point. In the roof
Em₀ = U = m g h
final point. On the floor
Em_f = K = ½ m v²
as there is no friction, the energy is conserved
Em₀ = Em_f
m g h = ½ m v²
v = √2gh
In the exercise the height of the ceiling is not indicated, but in general the height of the ceiling of a house is h = 2.5 m
v = √ (2 9.8 2.5)
v = 7 m / s
Restate Newton’s third law of motion.
Answer:
The force exerted by one source object on another target object always creates another force at the target object that pushes back on the source object with the same ... or His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A.
in 1897, a refracting telescope was built at the yerkes observatory in williams bay, wisconsin. at the time it was the largest telescope in the world, and is actually used till this day. the telescope has an objective lens of 1 m diameter with the focal length of 19 m. what should the focal length of the eyepiece lens be to give a magnification of magnitude 250?
The focal length of the eyepiece lens should be 0.076 m to give a magnification of magnitude 250.According to the magnification formula, Magnification = focal length of the objective lens / focal length of the eyepiece lens.
Magnification = 250focal length of the objective lens = 19 m Magnification = focal length of the objective lens / focal length of the eyepiece lens.250 = 19 / focal length of the eyepiece lens Rearranging the above equation to get the focal length of the eyepiece lens: focal length of the eyepiece lens = 19 / 250focal length of the eyepiece lens = 0.076 m Therefore, the focal length of the eyepiece lens should be 0.076 m to give a magnification of magnitude 250.
To achieve a magnification of 250 with a telescope at Yerkes Observatory in Wisconsin, you can use the formula.
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7
31. AC/DC circuits are used in the Ag Mechanics shop to
Measure the amount of gas in a small engine
B Provide electrical currents for welding
Provide a method for clamping wood into place
Provide music while working
E
AC/DC circuits are used in the Ag Mechanics shop to "Provide electrical currents for welding." The correct option is B.
AC/DC circuits are commonly used in welding machines to generate the necessary electric currents for the welding process. These circuits provide the power and control needed to create an arc between the welding electrode and the metal being welded, allowing for the fusion of the metal parts. Welding is a crucial activity in an Ag Mechanics shop for repairing and fabricating metal components.
A. AC/DC circuits are not typically used to measure the amount of gas in a small engine. Gas measurement in engines is usually done using specialized tools such as fuel gauges or diagnostic equipment.
C. AC/DC circuits do not provide a method for clamping wood into place. Wood clamping is usually achieved through mechanical means such as clamps, vices, or other woodworking tools.
D. AC/DC circuits can be used to power devices that provide music, such as radios or speakers. However, this is not their primary purpose or application in an Ag Mechanics shop. Their main function is to provide electrical currents for welding, which involves joining metal pieces together using heat generated by an electric arc.
Therefore, Option B. Providing electrical currents for welding is correct.
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